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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






2. Check feet and legs - look for masculine traits in build such as crest and muscling






3. 30 hours after estrus begins






4. What helps regulate spermatogenesis?






5. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






6. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






7. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






8. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






9. Provide nourishment for the developing sperm






10. 16-20 hours






11. Animals which have only one estrous cycle (ex: dog - fox)






12. Days which have decreasing daylight hours

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13. Male on one pin and female on other side






14. Front feet and head first. (except for hogs and dogs)






15. Failure to have one testis (gonad) to descend






16. Sperm production






17. Look for infection - split - and rupture of the penis






18. Larger the cow - more milk is produced; smaller the cow - less milk is produced






19. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






20. 19-23 (21) days






21. 45-60 days after breeding; re-breed as required






22. Contains and regulates the temp of the testes for sperm production






23. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






24. Animals which have many estrous periods per year (ex: cow - sow)






25. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






26. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






27. Milk ~305 days - dry 60 days prior to calving






28. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






29. 10-37 (21) days






30. Failure to have both testis (gonads) descend






31. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






32. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






33. 16-20 hours






34. Not under a timeline - cow can not be sold as steak






35. Sperm is produced here






36. Animal which has been castrated after puberty






37. What helps regulate spermatogenesis?






38. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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39. Parturition is controlled by...






40. (FSH) causes egg to mature in females






41. Superior genes are _______ to multiply






42. 30 hours after estrus begins






43. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






44. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






45. What about the sperm for a bull which has been castrated but still has testicles?






46. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






47. 147 days






48. Way to know everything is alright with the breeding male






49. When are steers and heifers weaned from bottle feeding?






50. To remove/separate testicles from animal's body before animal reaches puberty